E4990A Help
280
Imaginary
number
Imaginary part of a
complex number
Always 0
Expanded
phase
Expanded phase Always 0
Positive phase Positive phase Always 0
The instrument retains 16 formatted data arrays at maximum, each of
which is associated with one of the 4 traces contained in one of the 4
channels (4 × 4 = 16). To read/write one of the formatted data arrays, use
the following command:
:CALC:DATA:FDAT
Formatted memory arrays
A formatted memory array contains the formatted data (values to be
displayed) obtained by performing data math operations, measurement
parameter conversion, and smoothing on a particular corrected memory
array.
The instrument retains 16 formatted memory arrays at maximum, each of
which is associated with one of the 4 traces contained in one of the 4
channels (4 × 4 = 16). To read/write one of the formatted memory arrays,
use the following command:
:CALC:DATA:FMEM
Stimulus data arrays
A stimulus data array contains the stimulus values for all measurement
points.
The instrument retains 4 stimulus data arrays at maximum, each of which
is associated with one of the 4 channels. Stimulus data arrays are read-
only. To retrieve one of the stimulus data arrays, use the following
command:
:SENS:FREQ:DATA?
Reading/Writing Data
•
Overview
• Sample Program in Excel VBA
• Reading Data
• Writing Data
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